234 
D. E. SALMON’. 
ing from this feeding, 34 ; proportion of animals which contracte 
swine plague and died as the result of taking contagion from dea 
hogs into their system, 92 per cent. The three animals whic 
resisted the contagion in the above experiments had previous! 
been exposed to the disease; and it consequently follows tlu 
every one of the thirty-four pigs which had not been expose 
before feeding contracted the disease in so severe a form as t 
produce fatal results. 
In the experiments of Lydtin with the Pasteur vaccine, th 
vaccinated animals were fed with the organs of hogs which ha 
died of rouget to test the immunity which they had acquired. A 
the same time check animals, which had not been vaccinatec 
were fed with the same virus to bring out its effects on susceptibl 
animals by contrast with its effects upon those which it was su| 
posed were made insusceptible by the vaccination. The effect 
of feeding these check animals may, consequently, be compare 
with our feeding experiments related above, most of which wer 
also with check animals in similar experiments. I have collecte 
these results in the following table: 
TABLE SHOWING RESULTS OF FEEDING ROUGET MATERIAL TO HEALTH 
HOGS. 
Place of experiment. 
No. of animals 
fed. 
No. which died. 
Days between 
feeding and 
death. 
No. sick which 
recovered. 
Remarks. 
Heidelberg. 
4 
0 
0 i 
Fed twice witlioi 
result. 
Fed twice. 
Langenzell. 
4 
0 
\ 
0 
Zuzenliausen. 
2 
1 
6 
1 
One feeding. 
Fed three times. 
N ec kar bishof sheim. 
3 
0 
0 
Tresckklingen. 
Lohrbach. 
3 
4 
1 
0 
3 
0 
1 
One feeding. 
Three fed twice. 
Stein. 
4 
1 
4 
2 
One feeding. 
Dammkof .. 
3 
1 
4 
0 
One feeding. 
One feeding. 
Iloatatt. 
3 
1 
4 
0 
Aspichof. 
2 
0 
0 
Fed twice. 
Geisingen. 
4 
2 
3 and 4 
0 
One feeding. 
Two fed twice. 
Messkirch. 
3 
1 
4 
0 
Neidingen. 
2 
2 
4 
0 
One feeding. 
Two fed twice. 
Pforzheim. 
4 
0 
0 
Total. 
45 
10 
4 
. 
